Ballerina key



FIG. 1 is a side perspective view of my new design for a ballerina key;

FIG. 2 is a top plan view thereof;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a left side elevation view thereof;

FIG. 5 is a right side elevation view thereof;

FIG. 6 is a front elevation view thereof; and,

FIG. 7 is a rear elevation view thereof.

The broken lines are for illustration purposes only and form no part of the claimed design. 

CLAIM The ornamental design for a ballerina key, as shown and described. 